Powder distributing drum



Sept; 2', 1952 J. BUCHAN 2,609,126

POWDER DISTRIBUTING DRUM Filed Aug. 17, 1948 Patented Sept. 2, 1952UNITED STATES PATENT OFFICE POWDER DISTRIBUTING DRUM Northern IrelandApplication August 17, 1948, Serial No. 44,648 In Great Britain December17, 1947 2 Claims.

This invention relates to powder distributing drums and is directed moreparticularly to a cardboard carton of cylindrical form constructed foruse as a means of distributing powder of a comparatively fine grade, thedistribution of the powder being effected by manual pressure on thewalls of the cylinder, the powder being ejected through One or moreapertures at or near one end. In a distributor of this kind the cylindertends to become permanently deformed during use, and the object of theinvention is to overcome this disadvantage.

According to the invention, a powder distributor comprises a tubularbody portion and circular ends, the tubular body portion having aplurality of ribs or indentations which assist in strengthening the bodyso that its shape is restored after temporary deformation.

The invention is illustrated in the accompanying drawings, wherein:

Fig. 1 is a side elevation of one form of powder distributor madeaccording to this invention;

Fig. 2 is an end elevation;

Fig. 3 is a side elevation of a modification.

Referring to Figs. 1 and 2 of the drawings, a powder distributorcomprises a cylindrical body portion 1 of cardboard, preferably of thekind known as chip board, and a metal closure cap 2 fitted to each endin the known manner. Prior to forming the tube, the blank is scored topro vide two or more transverse indentations, which, when the blank isrolled into tubular form and joined in the usual manner by overlappingthe free ends and securing them together by adhesive, form peripheralindentations 3 in the wall of the tube. A preferred number of suchperipheral indentations would be three, as shown in Fig. l, and disposedmidway between the ends of the tubular body and spaced in parallelismapproximately to one inch apart. The indentations are Vs" wide and indepth. It has been found that three such indentations give the bestresults. The metal cap at one end has a central aperture 4 and istemporarily sealed with a piece of adhesive tape which is removed orpunctured when it is desired to expel the powder contents of thedistributor, or the metal disc may be provided with an indentation whichcan be easily pierced to form a perforation.

In an alternative embodiment of the invention, shown in Fig. 3, thecardboard blank is transversely scored to form three or more lines ofindentations, five being shown, in the manner previously described andis laid upon a slightly smaller sheet of corrugated cardboard to act asan internal reinforcement 5 to the Walls of the drum when both layersare rolled together into tube form, or by inserting a cellulose acetateor other film substance tube for the same purpose, the meeting ends ofthe reinforcement abutting and those constituting the external walloverlapping, said overlapping portion being secured together byadhesive. Instead of the metal ends cardboard ends 6 are used in whichcase the ends of the outer wall are formed with an internally directedflange 1 which lies over the adjacent end of the corrugated internalreinforcement and forms a heading for retaining in position a cardboardend closure disc pressed into each end. In addition, an end cap ofthinner cardboard or paper may be adhesively attached to either or bothends. The internal closure disc at one end is provided with a centralaperture and the adhesively applied cap, when pierced centrally, willallow the powder contents to be expelled.

Various modifications in detail formation of the powder distributor maybe made without departing from the essential feature of the inventionwhich is, as hereinbefore stated, to provide a plurality of indentationsor ribs in the body portion of the container to facilitate itsresumption to normal shape after being temporarily deformed by handpressure to expel the powder through the perforation by a bellows ac=-tion.

What I claim and desire to secure by Letters Patent is:

1. A powder distributor comprising a, tubular body and circular ends,the body having a portion intermediate said ends which is deformable toinduce discharge of the distributors contents, and a plurality ofcircumferential indentations spaced apart from each other on said bodyand defining a cylindrical portion of the body, between suchindentations, which is at least partly coincident with the saiddeformable portion.

2. A powder distributor according to claim 1 wherein the tubular bodyportion has at least three circumferential indentations to preventpermanent distortion of the body.

JAMES BUCHAN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 208,273 Stewart Sept. 24, 18782,185,227 Rose Jan. 2, 1940 2,207,294 Hubner et al. July 9, 19402,327,560 Rose Aug. 24, 1943

